Ablueberry plant produces about 26 blueberries per day. if the farmer picked 472 blueberries, how many days did the plants produce blueberries?

About 18 days.  

Step-by-step explanation:

The problem states that a blueberry plant produces about 26 blueberries per day.  So, our answer will be somewhat of an estimate for the amount of days the plants produced blueberries based on the number picked.  In order to solve for the number of days, we can set up equivalent ratios (fractions):

where 'd' = number of days.

We can cross-multiply and divide in order to find the amount of days:

So, d ≈ 18 days.

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads